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High Speed Puncture Properties of Additively Manufactured ULTEMTM 9085 Exposed to Hot/Wet Conditions
Abstract
High-speed puncture testing (ASTM D3763 – 10) was conducted on ULTEMTM 9085 sample disks created on a Stratasys FORTUS 900mc fused deposition modeling (FDM) machine. Samples of various thicknesses, print direction, and subject to various environmental conditioning, were tested. Statistically significant differences in peak load and absorbed energy were noted among the samples. Finite-element simulations of the impact tests were performed in LS-DYNA using an elastic-plastic constitutive model, calibrated to quasi-static tensile data collected on samples exposed to the same environmental conditions as the puncture tests. The numerical simulations showed qualitative agreement with experimental load-displacement curves up to peak load. Our results suggest that continuum constitutive models and commercial finiteelement analysis tools, calibrated to limited but physically congruent mechanical test data, show promise for first-order predictions of the puncture performance of as-built FDM components.
DOI
10.12783/asc35/34847
10.12783/asc35/34847